1406861 has 2 divisors, whose sum is σ = 1406862. Its totient is φ = 1406860.

The previous prime is 1406857. The next prime is 1406879. The reversal of 1406861 is 1686041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1394761 + 12100 = 1181^2 + 110^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406861 - 2² = 1406857 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1406861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1406161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703430 + 703431.

It is an arithmetic number, because the mean of its divisors is an integer number (703431).

2^1406861 is an apocalyptic number.

It is an amenable number.

1406861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406861 is an equidigital number, since it uses as much as digits as its factorization.

1406861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1406861 is about 1186.1117148060. Note that the first 3 decimals coincide. The cubic root of 1406861 is about 112.0513423192.

The spelling of 1406861 in words is "one million, four hundred six thousand, eight hundred sixty-one".